Beauty ingredient research

Beauty ingredients explained in plain English

Browse the review database to understand what an ingredient is, what it does in a beauty formula, when it is useful, and when it deserves caution across skincare, haircare, bodycare, makeup, and more.

20769

Reviewed ingredients

524

Low-concern standouts

2884

Need usage caution

Showing 60 of 1,342
AllUV absorberUV filterabrasiveabsorbentacne treatmentactiveactive ingredientadhesivealkalizing agentamino acidanti-aginganti-androgenanti-cavityanti-cavity agentanti-inflammatoryanti-irritantanticariesanticavity agentantidandruffantifungalantimicrobialantioxidantantiperspirantantiplaqueastringentbarrier repairbarrier supportbarrier-repairbarrier-supportbinderbinding agentbiotechbiotechnologybond-builderbotanicalbotanical extractbotanical oilbotanical waterbrighteningbrightening agentbufferbuffering agentcell-communicating ingredientceramidechelating agentchemicalchemical intermediateclaycleansercleansingcleansing agentcolorantconditionerconditioningconditioning agentcooling agentcosmeticcosmetic additivecosmetic colorantcosmetic ingredientcosmetic pigmentcosmetic powdercosmetic-texturizercosmetic-waxcosmeticscrosslinking agentdelivery agentdelivery systemdenaturantdeodorantdeodorant agentdepigmenting agentdepilatorydepilatory agentdesensitizing agentdyedye intermediatedye precursordye-intermediateemollientemulsifierenzymeessential oilexfoliantexperimentaleyelashfermentfilm formerfilm-formerfilm-formingfilm-forming agentfirming agentfixativeflavoring agentformulationfragrancefragrance ingredientfunctional ingredientgashair carehair colorhair coloranthair conditionerhair dyehair removalhair-carehair-colorhaircarehumectantindustrialinsecticideintermediatelashlash carelash enhancerlash-and-browlip carelipidmakeupmarine extractmasking agentmicrobiomemicrobiome modulatormineralmoisturizernail carenail-careocclusiveoilopacifieropacifying agentoptical agentoral careotheroxidative dyeoxidative dye precursoroxidizing agentpH adjusterpain reliefpenetration enhancerpeptidepersonal careph adjusterpharmaceuticalpheromonepigmentplant oilplasticizerpolymerpolymer precursorprebioticprescription-drugpreservativepreservative boosterprobioticprocessing agentprocessing aidpropellantproteinpurifyingreducing agentretinoidscalp caresebum regulatorsebum-regulatorself-tannerself-tanningsensory additivesensory agentsensory modifiersiliconeskin barrierskin barrier supportskin conditionerskin conditioningskin conditioning agentskin lighteningskin protectantskin-conditioningskin-conditioning agentskin-identicalskin-identical ingredientskin-lighteningskin-lightening agentskincaresolventsoothingsoothing agentstabilizerstimulantsunscreensurfactantsyntheticsynthetic colorantsynthetic dyesynthetic resinsynthetic-coloranttexture enhancertexturizerthickenertoneruv-absorberuv-filtervasoactivevasodilatorviscosity controlviscosity controllingviscosity controlling agentvitaminwax

Emulsifier

Polyglyceryl-3 Dicaprate

Polyglyceryl-3 Dicaprate

4.5

A gentle, non-irritating emulsifier that helps create stable, lightweight lotions and creams without stripping the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Dicocoate

POLYGLYCERYL-3 DICOCOATE

4.5

A mild, coconut-derived emulsifier that helps blend oil and water in creams and lotions without stripping the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Dihydroxy Stearate

Polyglyceryl-3 Dihydroxy Stearate

4.5

A gentle, plant-based emulsifier that creates creamy textures without stripping the skin, ideal for sensitive and dry types.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Dihydroxystearate

Polyglyceryl-3 Dihydroxystearate

4.3

A gentle, plant-derived emulsifier that creates stable, non-greasy textures and is well-tolerated by most skin types.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Dilaurate

Polyglyceryl-3 Dilaurate

4.3

A gentle, plant-derived emulsifier that creates stable, lightweight textures without stripping the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Dioleate

Polyglyceryl-3 Dioleate

4.5

A mild, plant-derived emulsifier that creates stable, silky formulas without stripping the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Distearate

Polyglyceryl-3 Distearate

4.5

A gentle, plant-derived emulsifier that creates stable, creamy textures without stripping the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Ester Emulsifier

TRI (POLYGLYCERYL-3/LAURYL) HYDROGENATED TRILINOLEATE

4.5

A gentle, plant-based emulsifier that creates stable, non-greasy formulas without common irritants.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Isostearate

Polyglyceryl-3 Isostearate

4.3

A mild, plant-derived emulsifier that helps create stable, creamy textures without common irritation.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Laurate

Polyglyceryl-3 Laurate

4.5

A gentle, plant-based emulsifier that creates stable, lightweight textures without stripping the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Myristate

POLYGLYCERYL-3 MYRISTATE

4.3

A mild, plant-derived emulsifier that helps create stable, creamy textures without stripping the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Oleate

POLYGLYCERYL-3 OLEATE

4.2

A mild, plant-derived emulsifier that helps create stable, creamy textures without stripping the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Palmitate

POLYGLYCERYL-3 PALMITATE

4.5

A mild, PEG-free emulsifier that stabilizes creams and lotions while being gentle on skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Pentaolivate

POLYGLYCERYL-3 PENTAOLIVATE

4.3

A mild, olive-derived emulsifier that stabilizes formulas and leaves skin feeling soft without clogging pores.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Polyricinoleate

Polyglyceryl-3 Polyricinoleate

4.0

A gentle, plant-based emulsifier that creates stable, non-greasy blends of oil and water — ideal for sensitive skin formulas.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Propyl Ether

POLYGLYCERYL-3 PROPYL ETHER

4.0

A mild, non-irritating emulsifier that helps create stable, creamy textures without stripping the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Rice Branate

Polyglyceryl-3 Rice Branate

4.5

A mild, eco-friendly emulsifier that helps blend oil and water in creams and lotions while leaving skin feeling soft.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Ricinoleate

POLYGLYCERYL-3 RICINOLEATE

4.2

A mild, plant-derived emulsifier that helps create stable, creamy textures without common irritation.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Stearate

Polyglyceryl-3 Stearate

4.3

A mild, PEG-free emulsifier that creates stable, creamy textures without common irritation.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Stearate SE

Polyglyceryl-3 Stearate SE

4.3

A mild, plant-based emulsifier that creates stable, non-greasy creams and lotions with low irritation potential.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Triisostearate

Polyglyceryl-3 Triisostearate

4.5

A mild, plant-derived emulsifier that helps create stable, silky formulas without clogging pores or irritating sensitive skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Triolivate

Polyglyceryl-3 Triolivate

4.3

A mild, plant-based emulsifier that creates stable, silky formulas without stripping the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-4 Caprate

Polyglyceryl-4 Caprate

4.5

A mild, non-irritating emulsifier that helps create stable, lightweight formulas while also softening the skin.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

Polyglyceryl-4 Caprylate

Polyglyceryl-4 Caprylate

4.5

A gentle, biodegradable emulsifier that helps create stable, lightweight textures without stripping the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-4 Caprylate/Caprate

POLYGLYCERYL-4 CAPRYLATE/CAPRATE

4.5

A gentle, plant-based emulsifier that creates stable, lightweight textures and is well-tolerated by most skin types.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-4 Cocoate

POLYGLYCERYL-4 COCOATE

4.5

A mild, eco-friendly emulsifier that creates stable, creamy formulas without stripping the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-4 Dilaurate

Polyglyceryl-4 Dilaurate

4.5

A gentle, plant-derived emulsifier that creates stable, lightweight textures without stripping the skin.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

Polyglyceryl-4 Distearate

Polyglyceryl-4 Distearate

4.5

A mild, plant-derived emulsifier that creates stable, creamy textures without stripping the skin.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

Polyglyceryl-4 Hazelnutseedate

Polyglyceryl-4 Hazelnutseedate

4.3

A mild, eco-friendly emulsifier that helps blend water and oil in your creams and lotions while leaving skin feeling soft.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-4 Isostearate

Polyglyceryl-4 Isostearate

4.2

A mild, plant-derived emulsifier that creates stable, lightweight formulas without stripping the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-4 Laurate

Polyglyceryl-4 Laurate

4.3

A gentle, plant-derived emulsifier that helps create stable, lightweight formulas without stripping the skin.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

Polyglyceryl-4 Lauryl Ether

Polyglyceryl-4 Lauryl Ether

4.2

A gentle, PEG-free emulsifier that creates stable, lightweight textures without stripping the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-4 Oleate

Polyglyceryl-4 Oleate

4.5

A gentle, plant-derived emulsifier that helps create stable, lightweight formulas without stripping the skin.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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